389328517 has 2 divisors, whose sum is σ = 389328518. Its totient is φ = 389328516.

The previous prime is 389328469. The next prime is 389328523. The reversal of 389328517 is 715823983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343509156 + 45819361 = 18534^2 + 6769^2 .

It is a cyclic number.

It is not a de Polignac number, because 389328517 - 2⁷ = 389328389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389328547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194664258 + 194664259.

It is an arithmetic number, because the mean of its divisors is an integer number (194664259).

Almost surely, 2^389328517 is an apocalyptic number.

It is an amenable number.

389328517 is a deficient number, since it is larger than the sum of its proper divisors (1).

389328517 is an equidigital number, since it uses as much as digits as its factorization.

389328517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 389328517 is about 19731.4094022703. The cubic root of 389328517 is about 730.1948044566.

The spelling of 389328517 in words is "three hundred eighty-nine million, three hundred twenty-eight thousand, five hundred seventeen".